Batching plays an important role in performance evaluation of manufacturing systems. Three types of batching are commonly seen: transfer batches, parallel batches and serial batches. To model the batching behavior correctly, a comprehensive classification of batching is proposed. Eight types of batching behavior are classified and corresponding queueing models are given. The newly proposed mode...

This paper discusses an order batching formulation and heuristic solution procedure suitable for a largescale order picking situation in parallel-aisle picking systems. Order batching can decrease the total travel distance of pickers not only through reducing the number of trips, but also by shortening the length of each trip. In practice, some order picking systems retrieve 500~2000 orders per...

Batching orders and routing order pickers is a commonly studied problem in many picker-to-parts warehouses. The impact of individual differences in picking skills on performance has received little attention. In this paper, we show that taking into account differences in the skills of individual pickers when assigning work has a substantial effect on total batch execution time and picker produc...

We introduce on-line batching problems as a new class of on-line combinatorial problems. In an on-line batching problem the task is to chop batches from a growing queue of objects, such that the cost is minimized, where the cost consists of setup cost for each batch, processing cost for each batch, and holding cost for each object that is not processed immediately. For on-line batching problems...

Abstract Order Picking in warehouses is often optimized using a method known as Batching, which means that one vehicle can be assigned to pick batch of several orders at time. There exists rich body research on Batching Problem (OBP) optimization, but area demands more attention computational efficiency, especially for optimization scenarios where have unconventional layouts and capacity config...

Order picking is the process of retrieving ordered products from storage locations in warehouses. In picker-to-parts order systems, two or more customer orders may be grouped and assigned to a single picker. Then routing decisions regarding visiting sequence items during tour must made. Won Olafsson (2005) found that solving integrated problem batching enables warehouse managers organize operat...

This paper considers the problem of constructing order batches for distribution centers using a data mining technique. With the advent of supply chain management, distribution centers fulfill a strategic role of achieving the logistics objectives of shorter cycle times, lower inventories, lower costs and better customer service. Many companies consider both their cost effectiveness and market p...

In picking product items in a warehouse to fulfill customer orders, a practical way is to classify similar orders as the same batch and then to plan the optimal picker routing when picking each batch of items. Different from the previous problems, this work investigates the joint order batching and picker Manhattan routing problem, which simultaneously determines the optimal order batching allo...